Lubrication of internal-combustion engines.



J. J. HOGAN.

LUBRICATION OF INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN. 25. 1912.

A 1,157,308. Patented Oct. 19, 1915.

ZZZ/77755555 EVE/VHF I To all whom it may concern I and: including the crankcase. sectional view on the line 3 3/ of Fig. 1.

iJ'Nirnn snares arana @FFEQEE.

JOHN-J. HOGAN, OF WEST HAVEN, ooNNEoTIc 'r, ASSIGNOR T0 JosEr 'E. HUBINGEB,

; or NE HAVEN, V

CONNECTICUT.

.LUBRICATION 0E INTERN -COMBUSTION ENGINES.

I Specification of Letters Patent.

Patented Got-19,1915.

ori inal application med June 2, 1911, Serial No. 630,762. Divided and this application filed January 25, i 1912. Serial No. 673,479,

Be it known that I, JoHNJ. HOGAN, a 1. citizen of the United States, residing at est Haven, in the countyof New Haven and State of Connecticut, have invented.

certain new and useful Improvements in the Lubrication of Internal-Combustion Engines, of which the following is a specification.

My invention relates to improvements in lubrication of internal combustion engines,

and the objects of my improvement are simplicity and economy in construction and convenience and efficiency in use, and is a divisional application of my application, Serial No. 630,762, filed June 2, 1911.

In the accompanying drawingz Figure 1 is a side elevation of part of. the engine shown in the application referred to. Fig. 2 is a sectional view on the line :20 w of Fig. 1,

Fig. 3 is a i A is a cylinder body or frame, comprising a casting having a pair of vertical cylinders 20 and having its lower end 33 flush with the bottom of the said cylinders, and resting on and supported by the crankcase E.

The cylinders 20 comprise each an upper portion 21 constituting the cylinder proper and in which combustion takes place and an enlarged lower portion 22 fitting and adapted to operatively receive respectively the upper portion 24: and the enlarged lower portion or extension 32 ofthe piston 13.

The cylinder proper 21'is provided with a water jacket 31Iand with spark plugs C and a relief valve D, and has fuelinlet ports 26 and discharge ports 27.

The cylinder extension 22 has an inlet port 34 nearthe lower-end and an outlet port 35 near the upper end. A pair of crossconnecting ports 36 are provided cross-connectingthe outlet port 35 of the cylinder extension 22 of one cylinder 20 with the fuel inlet port 26 of the cylinder proper 21 of the mating cylinder 20.

A connecting rod G connects the piston B with the crank shaft H, the cranks of mating cylinders 20 in each body A being 180 degrees apart.

The crank case E comprises a shell-like structure having an upper portion 45 which is adapted to receive and support the cyl inder body A and is it lf adapted to reshell -16 may have a rounded bottom as shown suitable to form a reservoir J for containing a supplyof oil I for splash lubrication, and is divided crosswise by ribs or dams 49 into compartments corresponding in number to the number of cranks 4:4.

The piston B is open at the bottom and hollow up to above the wrist pin O and near the upper end of the interior hollow portion is provided with a lip 58 extending from the inner periphery inward and upward so as to form an'oil receiving channel 59. Openings or ducts 60 through the wall of the piston B connect the said channel 59 with the exterior of the piston B and the adjacent inner wall of the cylinder. 20 and serve to deliverfoil thereto. 7

By providing the dams 19 an individual supply of oil is provided for each crank and into which the same may dip and thereby splash the oil for the lubrication of the piston and cylinder and the motive parts inclosed by the crank case.

As the lip 58 and oil channel 59 are located above the Wrist pin 0, they serve to deliver oil received in the channel 59 by splash lubrication directly to the upper part of the cylinder 20 and piston B, and independent of any means for lubricating the lower part thereof.

While the means of lubrication shown and described are applied to a piston and cylspecific construction herein disclosed may be made and therefore i do not wish to be understood as limiting myself to the precise form of construction shown and described, but desire the liberty to make such changes, inworking my invention as may fairly come A Within the spirit and scope of the same.

I claim as my invention In an nternal combustion engine, a cyl- Kinder a pist onfitted therein a n d'havingja wrist-pin, a crank, aconnecting rod are rangedbetween the Wrist-pin and. drank, and

a casing containing an'oil supply into which the said crank dips, thesaidpiston being open from end to end of 'said' piston and substantially unobstructed except by said I v wrist-pin, the said piston being provided with an annular lip on it's insideperiphery V ery of the-said iston; i 1 :1

aboi'e the wrist-pin and connecting rod and forming'anoilpocket efi'ective to'receive 011 splashed by said crank, Said piston also hm ing ductsj'leziding'i from Said oil" pocket throlighthepis ton' wall to the outerperiphf JOHN J; HOGAN.

Witnessesfjl V ELHUBINGERQJr-J,"

'WasningtomD. 1

iconic; of this i atent may. be obtained forfive centsea ch, by adch esing the f,(l omp1iss i n.rof page, 

